Dust collector blade structure

ABSTRACT

The present invention discloses a dust collector blade structure. In the present invention, the blades are uniformly and radiately arranged on a rotation disc. The blades are vertical to the rotation disc and form an air entrance at the center of the rotation disc. One end of each blade is exactly at the border of the rotation disc, and the other end of each blade has a wind-guiding bevel. The rotation disc is arranged inside a blower housing. The blower housing has an air outlet and a cover. The cover has an air inlet corresponding to the air entrance. The air outlet is arranged in the tangential direction of the rotation disc. The shape of the blades can reduce the air friction on the blades and thus can promote the blower performance and reduce the energy consumption.

FIELD OF THE INVENTION

The present invention relates to a dust collector, particularly to a dust collector blade structure for generating wind pressure.

BACKGROUND OF THE INVENTION

Dust collectors are usually equipped in the works generating dust and used to collect dust in the environment lest dust floats everywhere and pollutes the air. Refer to FIG. 1 for a blade structure of a conventional dust collector. The conventional dust collector comprises: a blower housing 1, a rotation disk 2 and a plurality of blades 3. The blades 3 are uniformly and radiately arranged on the rotation disc 2 and form an air entrance 4 in the center of the rotation disc 2. The rotation disc 2 is arranged inside the blower housing 1. The blower housing 1 has an air outlet 7 and a cover 5. The cover 5 has an air inlet 6 corresponding to the air entrance 4. The air outlet 7 is arranged in the tangential direction of the rotation disc 2.

When the rotation disc 2 rotates, air will enter from the air inlet 6 through the air entrance 4 to the blades 3. The blades 3 will squeeze the air and exhaust the air from the air outlet 7, and wind pressure is thus created. However, there is a great air friction on the blades 3 in such a wind pressure generating structure, and a greater current is needed to drive the rotation disc 2. Therefore, the conventional blade structure has an inferior efficiency and needs improving.

SUMMARY OF THE INVENTION

The primary objective of the present invention is to provide a blade structure, which can reduce air friction and wind resistance, whereby the current to generate required wind pressure is decreased, and the blower performance and energy efficiency are promoted.

To achieve the abovementioned objective, the present invention proposes a blade structure, wherein the blades are uniformly, radiately and vertically arranged on a rotation disc and form an air entrance in the center of the rotation disc, and wherein one end of each blade is exactly at the border of the rotation disc, and the other end of each blade has an upper wind-guiding bevel.

When the rotation disc of the present invention rotates, the blades have less wind resistance. Therefore, the blade structure of the present invention can use less current to generate the same wind pressure. Thus, the energy consumption is reduced.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is diagram schematically showing a blade structure of a conventional dust collector.

FIG. 2 is diagram schematically showing a blade structure according to the present invention.

FIG. 3 is diagram schematically showing the dimensions of a blade structure according to the present invention.

FIG. 4 is diagram schematically showing a blade structure according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Below, the embodiments are described in detail in cooperation with the drawings to make easily understood the objectives, characteristics and efficacies of the present invention.

Refer to FIG. 2. In the present invention, the blades 10A are uniformly and radiately arranged on a rotation disc 20. The blades 10A are vertical to the rotation disc 20 and form an air entrance 11 at the center of the rotation disc 20. One end of each blade 10A is exactly at the border of the rotation disc 20, and the other end of each blade 10A has an upper wind-guiding bevel 30. The rotation disc 20 is arranged inside a blower housing 40. The blower housing 40 has an air outlet 43 and a cover 41. The cover 41 has an air inlet 42 corresponding to the air entrance 11. The air outlet 43 is arranged in the tangential direction of the rotation disc 20.

Refer to FIG. 3. The wind-guiding bevel 30 and the top side of the blade 10 A contain an angle θ of between 130 and 140 degrees, and the angle θ is preferably 136 degrees.

Refer to FIG. 4 for another embodiment of the present invention. In this embodiment, the blades 10B have an arc shape, and the curvature radius of the blade 10B is 171 mm, whereby the wind resistance on the blades 10B can be further reduced, and whereby the performance thereof can be further promoted.

Refer to Table.1 for test results of the present invention. In the tests, the blade structure adopts eight pieces of the blades 10B; the blades 10B has a curvature radius of 171 mm and a height of 120 mm; the rotation disc 20 has a diameter of 390 mm and rotates at a speed of 3450 RPM; the air inlet 42 has a diameter of 10 inches; the air outlet 43 is connected with a dust-collecting pipe having a length of 160 inches. In the tests, the variable parameter is the angle θ contained by the wind-guiding bevel 30 and the top side of the blade 10B, which is 130 degrees, 133 degrees, 136 degrees or 180 degrees (the control group). In the tests, current, wind speed and static pressure are measured. The current can signify the energy consumption, and the wind speed and static pressure are used to evaluate the generated wind pressure. Compared with the control group, the present invention has higher wind speeds and consumes less current. Especially, when the angle θ contained by the wind-guiding bevel 30 and the top side of the blade 10B is 136 degrees, the present invention has the best performance. Therefore, the present invention can use less current to generate the same wind pressure and can thus promote the energy efficiency.

TABLE 1 Angle θ Current Wind speed Static pressure (degree) (mA) (m/s) (mm H20) 180 34.2 27.1 220 136 34.1 34.9 340 133 34.0 31.8 300 130 34.0 31.8 226

In conclusion, the present invention arranges the wind-guiding bevels 30 on the blades 10A and 10B to reduce the wind resistance and generate the same wind pressure with less current. Further, the arc-shape blades 10B can further reduce the wind resistance and promote the performance. 

1. A dust collector blade structure, wherein a plurality of blades is uniformly and radiately arranged on a rotation disc, and wherein said blades are vertical to said rotation disc and form an air entrance at the center of said rotation disc, and wherein one end of each said blade is exactly at the border of said rotation disc, and wherein the other end of each said blade has an upper wind-guiding bevel.
 2. The dust collector blade structure according to claim 1, wherein said wind-guiding bevel and the top side of said blade contain an angle θ of between 130 and 140 degrees.
 3. The dust collector blade structure according to claim 2, wherein said wind-guiding bevel and the top side of said blade contain an angle θ of 136 degrees.
 4. The dust collector blade structure according to claim 1, wherein said blades have an arc shape.
 5. The dust collector blade structure according to claim 4, wherein said blades have a curvature radius of 171 mm. 